<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		
		<script>
			
			{
				var name = "why";
				console.log(name)
				var result = 20 + 30;
				console.log(result);
			}
			
			{
				var age = "18";
				console.log(parseInt(age));
			}
			
		</script>
	</body>
</html>
